Expression Builder: convert string to number

Hi all,
I'm having trouble building a field validation rule for bank account numbers.
The numbers have 12 positions, so I cannot use a string or text number.
The validation rule to be implemented is that the last two digits are calculated based on the first 10 (modulo 97).
However, when I use the Mid function to pick the first characters, I am unable to do any calculations on it. Apparently, the string to number conversion doesn't work (it should work when I read the manual, as it says that when using an operator between two data types, the second type is converted to the first (cf. example of 1234+abcd (should result in 1234 as to the manual))). So I tried '1*Mid(...)' or '0+Mid(...)'. Syntactically the expression builder accepts it and I can save it. BUT when I change the particular value on the screen, it gives me an SSO error (not the Field Validation error message I entered).
Why isn't there simply a function ToNumber (like ToChar)????? How could I workaround this?
Any input very welcome!
Frederik

Apparently, I was a bit confused when typing the first sentence, it should be:
The numbers have 12 positions, so I cannot use an integer or number data type, but have to use String.

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Converting string to number

Why the number doesn't contain the whole string and how to solve it ?
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Attachments:
String to number.vi ‏7 KB

MarinaNashaat wrote:
binary bits
What does that even mean?
Post a screenshot of your VI with the data typed in. Or put the data in the control. Right click and save the value as defaul. Save the VI and attach that.
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Function to convert string to number

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Wouldn't it just be something like this?
sql>create or replace function calculate_hours_project(in_hours in varchar2)
2 return number
3 is
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8 /
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Not able to convert string attribute to number and date please help me out

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You can convert a string that represents a date to a date object using the util.scand JavaScript method, and then format a date object to a string representation using the util.printd method. For more information, see:
http://livedocs.adobe.com/acrobat_sdk/9.1/Acrobat9_1_HTMLHelp/JS_API_AcroJS.88.1254.html
http://livedocs.adobe.com/acrobat_sdk/9.1/Acrobat9_1_HTMLHelp/JS_API_AcroJS.88.1251.html
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Message Edited by Terje on 02-08-2010 05:00 AM
Message Edited by Terje on 02-08-2010 05:01 AM
Message Edited by Terje on 02-08-2010 05:06 AM
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Attachments:
rounding error.vi ‏6 KB

Gerd,
i just searched in the web a little bit in order to shed some light on the issue. Sadly, i found no real "solution", but something interesting:
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thank you, I will try this solution. Also I want to do one more thing. So, I am collecting data and putting them in to table let say data are like this
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My system is include LakeShore 336 temperature conroller and Keithley 182 Nanovoltmeter. I will set the temperature specified value from room temperature wtih specific ramp rate. Meanwhile I will measure the voltage from sample via K182. So, I can measure both temp, and voltage via taking help from u.

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